Average Bench: 62.6% (502nd of 911)

more Based on 970 user benchmarks.  Models: KINGSTON SKC300S37A120G, KINGSTON SKC300TS37A120G, KINGSTON KINGSTON SKC300S, KINGSTON SKC300S37A1, KINGSTON SKC300S37A120G, KINGSTON SKC300S

Above average average bench

The Kingston SSDNow KC300 120GB averaged 37.4% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Write Speed 70.3MB/s
Avg. 4K Random Read Speed 24.4MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Kingston SSDNow KC300 120GB is 30.5%. This is a relatively narrow range which indicates that the Kingston SSDNow KC300 120GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 176MB/s
Avg. 4K-64Thread Read Speed 121MB/s

Average Bench

(Based on 970 samples)
Min Avg Max
340 Read 463 515
131 Write 176 205
161 Mixed 219 267
62.6% 286 MB/s
Min Avg Max
13.8 4K Read 24.4 35
33.5 4K Write 70.3 107
8.1 4K Mixed 15.6 22.6
94.1% 36.7 MB/s
Min Avg Max
20.5 DQ Read 121 217
49.7 DQ Write 141 202
7.6 DQ Mixed 36.8 61.5
53.9% 99.7 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
24GB free
Firmware: 580A Max speed: SATA 3.0 600 MB/s
Read 453
Write 181
Mixed 215
62% 283 MB/s
4K Read 13.4
4K Write 103
4K Mixed 16.6
96% 44.4 MB/s
DQ Read 148
DQ Write 110
DQ Mixed 50.1
59% 103 MB/s
39GB free
Firmware: 605ABBF0 Max speed: SATA 3.0 600 MB/s
Read 500
Write 193
Mixed 219
66% 304 MB/s
4K Read 30
4K Write 70.2
4K Mixed 14
101% 38.1 MB/s
DQ Read 30.9
DQ Write 72
DQ Mixed 59.5
43% 54.1 MB/s
86GB free
Firmware: 507K Max speed: SATA 3.0 600 MB/s
Read 389
Write 177
Mixed 205
56% 257 MB/s
4K Read 27
4K Write 50.5
4K Mixed 19.2
92% 32.2 MB/s
DQ Read 204
DQ Write 190
DQ Mixed 46.5
76% 147 MB/s
81GB free
Firmware: 507KC4 Max speed: SATA 3.0 600 MB/s
Read 482
Write 184
Mixed 238
66% 301 MB/s
4K Read 24
4K Write 71
4K Mixed 11.1
88% 35.4 MB/s
DQ Read 23.1
DQ Write 196
DQ Mixed 9.41
37% 76.2 MB/s
970 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,065,201 SSDs tested.


Approx. $101 @ launch in Jul '13
AmazonUS $10211 months
EbayUS $1077 mins
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Typical SSDNow KC300 120GB Builds (Compare 2,200 builds) See popular component choices, score breakdowns and rankings.
Gaming 54%
Desktop 49%
Workstation 38%
Jet ski

Motherboard: Asrock 990FX Extreme3 - $112

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $694

Popular SSDNow KC300 120GB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) March 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]


Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: SandForce SF2281. Flash Memory: Toshiba 19nm Toggle Mode.

One of the most power-efficient SSDs on the market...

Added 3 years ago.

911 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
AMD Ryzen 5 1600 $188AMD RX 480 $400Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $216SanDisk Extreme 16GB $18
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